Combination-level.



A. D. DESILETS- COMBINATION LEVEL.

APPLIOATION FILED MAY 17, 1911.

Patented June 18, 1912.

2 SHEETSSHEET 1.

42405 p/a/v/s 059/4525 Inventor Attorneys ccLunuuA PLANOGRIAPHC0..\VASHlNdTON. D c.

A. D. 'DESILETS.

COMBINATION LEVEL.

APPLICATION FILED MAY 11, 1911'.

Patented June 18, 1912.

2 SHEETS-SHEET 2.

Inventor Witnesses Attorneys COLUMBIA PLANouRAnu C0.,WASHINUTON. D. c.

AZADE DIONIS DESILETS,

OF SHERBROOKE EAST, QUEBEC, CANADA.

COMBINATION -LEVEL.

eeann.

Specification of Letters Patent.

Patented J iine 18, 1912.

Application filed May 17, 1911. Serial No. 627,844.

To all whom it may concern Be it known that I, AZADn DIONIS DESL LETS, asubject of the King of England, residing at Sherbrooke East, in theProvince. of Quebec, Canada, have invented certain new and usefulImprovements in Combination-Levels; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention, suchas will enable others skilled in the art to which it appertains to makeand use the same.

The invention to be hereinafter described relates to a level.

Broadly speaking, it comprises two separate level-beams hinged together,a level carried by each level-beam, means for ad-- justing the levelbeams angularly with relation to one another, and means for holding thelevel beams in such adjusted positions.

In order to more clearly disclose the construction, operation, and useof the invention, reference should be had to the accompanying drawingsforming part of the present application.

Throughout the several figures of the drawings like reference charactersdesignate the same parts.

In the drawings: Figure 1 is a side elevation of the invention, foldedand ready for use as a common carpenters level; Fig. 2 is a top planview of Fig. 1; Fig. 3 is a side elevation of the inside of one of thelevelbeams; Fig. 4 1s a similar view of the other level-beam; Fig. 5 isa left-hand end elevation of Fig. 1; Fig. 6 is a fragmentarylongitudinal section through the level-beams folded together, showingthe mounting of one of the horizontal levels; Fig. 7 is a side elevationof the other horizontal level, show ing the means for adjustablysupporting it; Fig. 8 is a plan view of the complete level, in openposition; and Fig. 9 is a fragmentary longitudinal section.

The main object of the invention is to provide a simple, economical,durable, and compact combination level.

Referring to the drawings in detail, 1 in dicates duplicate level-beamshinged together or pivotally connected at one end. Each of theselevel-beams is provided with a separate and independent level 2 by whichit is possible to determine whether or not the level-beam is exactlyhorizontal. One of these levels is mounted in a block 3 which is seatedin a recess formed in the upper longitudinal edge of the level-beam.This block 3 projects from its recess and extends into a similar recessformed in the other levelbeam. A cover plate 4: is provided for theupper edge of each of the recesses and each cover plate is provided witha notch. These two notches, when the level-beams are closed. together,form an opening through which the bubble may be observed, as in Fig. 2.The level-beams are also each provided with side notches 5 communicatingwith the recesses and adapted for observation of the bubble, as usual.By this construction, it is possible to use either of the level-beamsseparately, or both of them together as an ordinary carpenters level.The two beams are held in closed position by means of a simple springcatch 6 secured to one of the beams and adapted to engage the other,seeFigs. 4, 8, and 9.

In order to render the combination level equally available as a plumblevel, one of the level-beams is provided with a plumb level 7 and eachlevel-beam is provided with an opening 8 through which the bubble may bereadily observed. The level, as so far described, may be very easilyused bothas a horizontal level and as a plumb level for any and allkinds of work.

In order to adjust the horizontal levels relatively to the edges of thelevel-beams, one end of the block containing the level is provided withan elongated slot through which one of the attaching screws ispassecL-see Fig. 7. By loosening the screw, the level may be adjusted asdesired. Then the screw may be tightened and the block held in place.The plumb level may be similarly arranged, if desired.

The exact angular adjustment of the level-beams relatively to oneanother may be determined and indicated by means of a scale and index.The scale 14 is secured to the inside face of one of the level-beamswhile the index arm 15 is pivotally secured to the inside face of theother level-beam. This index arm is formed with a clamping jaw at itsfree end and provided with a tightening thumb screw 16. screw 16 isloose, the arm will swing freely and the relative positions of thelevel-beams may be changed at will. When the right adjustment has beenreached, the thumb While the screw 16 will be tightened and the scalewill be clamped between the arm 15 and its cooperating jaw. The forwardcorner 15' of the free edge of the arm 15 will fall oppober of degreesin the angle separating the.

two level-beams.

In order to render the whole device morecompact and easier to carryabout, the inner faces of cessed to permit the seating of the levelblocks, and scale index arm, without increasing the size or thethickness of the com leted instrument.

It is thought that the operation and use of the invention will be clearfrom the preceding detailed description.

Changes may be made in the construction, arrangement and disposition-0fthe several parts of the invention without in any way departing from thefield and scope of the same, and it is meant to include all such withinthis application wherein only a preferred form has been disclosed.

Having thus fully described my invention, what I claim as new and desireto protect by Letters Patent is:

1. A device of the character described, comprising two pivotallyconnected level beams each provided with a recess in its inner faceextending downwardly from its upper edge, said recesses being adapted tobe alined, a cover plate for each recess and provided with a notch, saidnotches being adapted to be alined, and a horizontal level mounted inone of the aforesaid recesses and adapted to project into the other'ofsaid recesses when the level beams are closed tothe level-beams aregrooved or re- I gether, the bubble of said level being readable throughthe aforesaid notches.

2. A device of the character described, comp-rising two pivotallyconnected level beams each provided with a recess in its inner faceextending downwardly from its upper edge, said recesses being adapted tobe alined, a cover plate for each recess and provided with a notch, saidnotches being adapted to be alined, a horizontal level mounted in one ofthe aforesaid recesses and adapted to project into the other of saidrecesses when the level beams are closed to gether, the bubble of saidlevel being readable through the aforesaid notches, and means foradjustably securing said level.

3. A device of the character described, comprising two level beamspivotally connected together and each provided with a recess, saidrecesses being adapted to be alined when the level beams are closedtogether, a cover plate for each recess and provided with a notch, saidrecesses being adapted to be alined when the level beams are closedtogether, a block adjustably mounted in one of said recesses, means forsecuring said block in adjusted positions, and a level mounted in saidblock.

In witness whereof I have hereunto set my hand'in the presence of twowitnesses.

AZADE DIONIS DESILETS.

Witnesses:

HENRY J. DUFrETr, A. GENDRON.

Copies of this patent'may be obtained for five cents each, by addressingthe Washington, D. C.

Commissioner of Patents,

